| 序号 | 时间 (年) |
数据 (万美元) |
|---|---|---|
| 1 | 2018 | |
| 2 | 2012 | |
| 3 | 2011 | |
| 4 | 2006 | |
| 5 | 2005 | |
| 6 | 2004 | |
| 7 | 2003 | 24.00 |
| 8 | 2002 | 15.00 |
| 9 | 2001 | 608.00 |
| 10 | 2000 | 18.00 |
| 11 | 1998 | 19.00 |
| 12 | 1996 | 34.00 |
| 13 | 1995 | 44.00 |
| 14 | 1993 | 26.00 |
| 15 | 1992 | 50.00 |
